Floor construction



Aug. 11, 1931. o. s. BOWMAN 1,818,299

I FLOOR CONSTRUCTION Filed April 7, 1950 abtocmq atented Aug. 11 1931' V STATES Application filed April 7, 1930. Serial No. 442,218.

This invention relates to improvements in floor constructions and has reference more particularly to an improved construction of cement floors of the general type described '15, and claimed in my copending a plications,

Serial Nos. 413,774; and 413,77 5, led on December 13, 1929.

It is the object of this invention to produce a floor of fireproof or semi-fireproof 1 construction having a surface composed of concrete or like durable materials, divided into anchored and correlated sections in a manner which permits it to flex with the joists or other cushioning means of support.

The above and other objects that may become apparent as this description proceeds are attained by means of the construction and arrangement of parts that will now be described in detail and for this purpose ref- 2 erence will be had to the accompanying drawings in which the preferred embodiment of the invention has been illustrated and in which:

Fig. 1 is a plan view of a portion of a 25 floor constructed in accordancewith my invention, portions of the concrete being removed so as to better disclose the construction; Fig. 2 is a detail showing the manner of 53%) applying the separator strips;

Fig. 3 is a section taken online 3-3, Fig. 1;

Fi 4 is a section taken on line 4-4, Fig. 3;

Fig. 5 is a section similar .to that shown in Fig. 3, but with the wooden joists and showing a slightly modified form of construction;

Fig. 6 is a section taken on line 6-6,

P Fig. 5;

Fig. 7 is a section similar to that shown in Fi a and shows another modification;

Fig. 8 is a section showing my floor supported on a concrete slab; an

Fig. -9 is a-section taken on line 9-9, Fig. 8. i In the drawing reference numeral 1 designates the floor joists which have been shown as formed from I-beams of ordinary 59 construction and numeral 2 designates the pans that are supported on the I-beams and which in turn form supports for the concrete. The pans are made from sheet metal and are each of considerable length. The pans can be of any suitable length and are usually a multiple of the distance between the joists so that the joint between any two adjacent pans will come on top of a joist. One such joint has been designated by reference numeral 3 in Fig. 1. The pans are usually of the same width as the distance between the joists in the construction where they are used and have their sides turned up as indicated by reference numeral 4. The upper edges of sides 4 are'preferably bent downwardly and lie on the inside of the sides as indicated by reference numeral 5. The lower edges of the bent down portions form shoulders that serve to hold the concrete in place in a manner that will here inafter more clearly appear. For the purose of securing the pans to the joists, the

ottoms of the pans have been provided with integral tongues 6 that can be bent downwardly about the edges of the upper flange of the joists in the manner shown in Fig. 3. After the joists have been put in place, the pans can then be put in place on the joists and secured to them in the manner shown. To permit the hard surface of the floor to flex with the joists without cracking and becoming loose, it is necessary to divide the concrete into sections and anchor them to the supporting base, which is accoinplished by means of the unique separator strips and the vertical sides of the pans. In the present construction one of these separator strips has been designated by reference numeral 7 and this strip is placed be tween the two adjacent vertical sides 4. of adjacent pans in the manner shown in Figs. 2' and 8. The strips 7 are usually held against removal by means of screws or pins 8 in the manner shown in Fig. 3, and 7 areprovided with spaced notches 9 that extend downwardly from their upper edges and which are adapted to receive strips 10 that extend at right angles to them. The strip indicated by reference numeral 10 have notches 11 that are adapted to receive the trowel finished, as are ordinary concrete' floor surfaces; or, when suitable materials are used, as in terrazzo or llke floors, then the surface is ground and finished in the usual manner.

turned down edges 5 of sides 4 have been omitted. Instead of placing the separator strip 7 between the two sides of the adjacent pans, the sides themselves are placed in contact with each other and are held together by means of a separator 12 which is provided on its lower side with a slot 13 into which the upper edges of sides 4 extend in the manner shown in Fig. 6. Screws 14 serve to hold separators 12 in place and extending transversely of the pans are separators 15 whose upper edges are widened as indicated at 16 so that their width is equal to the width of separators 12. Separators 16 are provided with notches 17 that receive the sides 4.- in the manner shown. The separators 15 are provided with openings 18 and the same is also true of separators 10. These openings permit the concrete to extend through the separators thereby anchoring vided with longitudinal them in place. The separators 12 are preferably cut of such length that they fit the space between the separators 16 in the manner shown in Fig. 5.

In Fig. 7 I have shown another modification and in this modification the pans are provided with upwardlyextending sides 19 and 20. Sides 19 have a width equal to the thickness of the finished floor and are progrooves 21. The sides 19 are also provided with spaced notches extending downwardly from the upper edge thereof and which in turn receive the separator plate 7. The opposite side of each pan is narrower than sides 19 and is provided with an outwardly bent portion 22 that fits against the inner surface of groove 21, as shown in Fig. 7. Grooves-21 serve to anchor the concrete block or sections and the concrete that passes through openings 18 serves to hold the separators 7 in place.

It will be seen from the above description that I have produced a floor construction of great simplicity that can be very easily installed and which forms a substantial floor when in place. I

In Fig. 1 the joists 1 have been shown as composed of steel I-beams, but this is illustrative only and instead of steel, wooden After the separator strips have joists can be used in which case thepans I .LL. 1 w-Annn A A iv-m A um latter uwuua uf strips 2 I nun material and which will yield slightly when subjected to pressure. The pans are provided with sides 4 that are straight instead of having their upper edges folded down-- wardly as indicated by 5 in Fig. 4. The separator strips 7 are located between adjacent sides 4 as shown in Fi' 9 and are held in place by bolts 8. Holes 18 are provided for anchoring the concrete floor sections.

Having described the invention what is claimed as new is:

1. A floor construction comprising parallel floor joists, elongated pans extending transversely of the joists and supported thereon, the sides of the adjacent pans being placed adjacent each other with their edges extending upwardly and notched separator strips extending transversely of the pans.

2. A floor construction com rising, in combination, spaced parallel oor joists, long shallow pans having sides extending upwardly substantially at right an les to the bottoms, the bottoms of the pans aving downwardly extending lugs for anchoring the pans to the-joists and separator strips extendin transversely of the pans.

3. A oor construction comprising, in combination, spaced parallel floor joists long shallow pans provided with parallel sides extending upwardly at right angles to the bottoms,.means for attaching the pans to the joists, a separator strip associated with each pair of adjacent sides and separator strips extending across the pans at spaced intervals.

4. A floor construction of the class described comprising spaced, supporting oists, elongated pans supported on t e joists, each pan having a fiat bottom and upwardly extending edges, the bottoms of the pans having a pluralit of pairs of downwardly extending lugs t at constitute means for securing the pans to the joists, separators located between adjacent ans, means for securin the separators to t e sides of the pans and separators extending across the pans for cooperating with the sides of the pans and with the other separators for forming rectangular recesses for the reception of concrete.

5. In a floor construction of the type described, pans for supporting the concrete floor on the joists, said pans being formed from metal sheets whose edges are bent into parallel s aced planes that lie at right angles to t e planes ofthe bottoms of the sheets, one of the sides being higher than the other and provided with a groove extending its entire length, the higher side being also provided with spaced notches, 1

6. In a floor construction of the type described, pans for sup orting the concrete floor on the joists, saig pans being formed from metal sheets whose edges are bent into parallel spaced planes that lie at right angles to the planes of the bottoms of the sheets, one of the sides being higher than the other and provided with a groove extending its entire length, the lower side having its'free edge bent so that it will fit the wall of the groove in the wider side member.

7. In a floor construction of the type described, pans for supporting the concrete floor on the joists, said pans being formed from metal sheets whose edges are bent into' parallel spaced planes that lie at right angles to the planes of the bottoms of the sheets, one of the sides being higher than the other and provided with a groove extending its entire length, the lower side having its free edge bent so that it will fit the wall of the groove in the wider side member, the higher side having spaced notches for the reception of transverse separators.

In testimony whereof I afllx my signature.

. OLIVER S. BOWMAN. 

